FERC issues permit for 250-MW Coffin Butte pumped storage project

The Federal Energy Regulatory Commission on June 25 approved a three-year preliminary permit for CB Energy Park LLC for a 250-MW pumped storage hydro project in Montana.

In December 2013, CB Energy Park filed an application for a preliminary permit that would allow it three years of exclusivity to study the feasibility of the proposed Coffin Butte Pumped Storage Hydro Project, to be located near Two Dot in Wheatland County, Mont. A license application would be needed to advance the project further.

The project would include upper and lower reservoirs, and a powerhouse containing two reversible 125-MW turbine/generator units for a total installed capacity of 250 MW. There would also be an approximately 2-mile-long, 230-kV transmission line connecting to an existing 500-kV transmission line in the area, or a 7-mile-long, 230-kV transmission line connecting to the existing Two Dot substation.

The proposed project would have an average annual generation of 880,000 megawatt-hours.

About Barry Cassell 20414 Articles
Barry Cassell is Chief Analyst for GenerationHub covering coal and emission controls issues, projects and policy. He has covered the coal and power generation industry for more than 24 years, beginning in November 2011 at GenerationHub and prior to that as editor of SNL Energy’s Coal Report. He was formerly with Coal Outlook for 15 years as the publication’s editor and contributing writer, and prior to that he was editor of Coal & Synfuels Technology and associate editor of The Energy Report. He has a bachelor’s degree from Central Michigan University.